2004
Five Habits for Successful Regular Expressions
by roberto & 3 othersRegular expressions are hard to write, hard to read, and hard to maintain.
Why's (Poignant) Guide to Ruby
by roberto & 29 othersQuick (and Hopefully Painless) Ride Through Ruby (with Cartoon Foxes).
Open Dynamics Engine - ODE
by roberto & 1 otherA free, industrial quality library for simulating articulated rigid body dynamics.